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Wide
Area Network (WAN) adalah suatu jaringan yang
digunakan untuk membuat interkoneksi antar jaringan
komputer local yang secara fisik tidak
berdekatan satu sama lain, yang secara fisik bisa dipisahkan dengan kota,
propinsi, atau bahkan melintasi batas geography – lintas negara dan benua. Ada beberapa
Teknologi Jaringan WAN saat ini
yang bisa kita gunakan. Berbeda dengan jaringan
LAN, ada perbedaan utama antara keduanya dimana
terletak pada jarak yang memisahkan jaringan-2 yang terhubung tersebut. WAN
menggunakan media transmisi yang berbeda, maupun hardware dan protocol yang
berbeda pula dengan LAN. Data transfer rate dalam komunikasi WAN umumnya jauh
lebih rendah dibanding LAN.
B.PUNGSI DAN TUJUAN JARINGAN WAN
Sharing resources
Kita
dapat membagi sumber yang ada dalam arti dapat digunakan secara bersama-sama
seperti program, peralatan, atau peripheral lainnya sehingga dapat
dimanfaatkan setiap orang yang ada pada jaringan komputer tanpa harus
terpengaruh oleh lokasi.
Media
komunikasi
Dapat
memungkinkan terjadinya komunikasi antar pengguna jaringan, baik itu untuk teleconference,
instant messaging, chatting, mengirim surat elektronik
(e-mail) maupun mengirim informasi penting lainnya.
Integrasi
data
Dapat
mencegah ketergantungan pada komputer pusat, setiap proses data tidak harus
dilakukan pada satu komputer saja melainkan dapat didistribusikan ke tempat
lainnya atau dengan kata lain dapat dikerjakan oleh komputer-komputer lain yang
ada dalam
jaringan.
Keamanan
data
Sistem
jaringan komputer dapat memberikan perlindungan terhadap data melalui
pengaturan hak akses pengguna dan password, serta teknik perlindungan
yang lainnya.
Web
Browsing
Untuk
mengakses informasi yang ada pada jaringan, contohnya web browsing.
Hampir setiap orang yang membaca tulisan ini mungkin pernah menggunakan browser
web (seperti Internet Explorer, Mozilla Firefox, Netscape,
Opera dan yang lainnya). Browser web memungkinkan kita untuk melihat
informasi yang ada di dalam sebuah web server di suatu tempat di dalam
Internet.
Mengkoneksikan
device-device yang terpisahkan dalam area global,
Menyajikan
koneksifitas full-time/port-time,
Beroperasi
pada jangkauan geografis yang luas.
C.KELEBIHAN DAN KEKURANGAN JARINGAN
WAN
Kelebihan
dari WAN :
a.Bisa diakses dengan jangkauan area
grografis yang luas sehingga berbisnis dengan jarak jauh dapat terhubung dengan
jaringan ini
b.Dapat berbagi (share) software dan
resources dengan koneksi workstations.
c.Pesan dapat dikirim dengan sangat
cepat kepada orang lain pada jaringan ini (bisa berupa gambar, suara, atau data
yang disertakan dengan suatu lampiran).
d.Hal-hal yang mahal (seperti printer
atau saluran telepon ke internet) dapat dibagi oleh semua komputer pada
jaringan ini tanpa harus membeli perangkat yang berbeda untuk setiap
komputernya.
e.Semua orang yang ada di jaringan ini
dapat menggunakan data yang sama. hal ini untuk menghindari masalah dimana
beberapa pengguna mungkin memiliki informasi lebih tua daripada yang lain.
f.Berbagi informasi/file (share)
melalui area yang lebih besar
g.Besar
jaringan penutup.
Kekurangan WAN :
a.Biaya operasional mahal dan umumnya
lambat
b.Memerlukan
Firewall yang baik untuk membatasi pengguna luar yang masuk dan dapat
mengganggu jaringan ini
c.Menyiapkan
jaringan bisa menjadi pengalaman yang sangat mahal dan rumit. Semakin besar
jaringan semakin mahal harganya.
d.Keamanan
merupakan masalah yang paling nyata ketika orang yang berbeda memiliki
kemampuan untuk menggunakan informasi dari komputer lain. Perlindungan terhadap
hacker dan virus menambah kompleksitas lebih dan membutuhkan biaya.
e.Setelah
diatur, memelihara jaringan adalah pekerjaan penuh waktu (full time) yang
membutuhkan jaringan pengawas dan teknisi untuk dipekerjakan.
f.Informasi
tidak dapat memenuhi kebutuhan lokal atau kepentingan.
g.Rentan terhadap
hacker atau ancaman dari luar lainnya.
D.ALAT,
KOMPONEN BAHAN YANG DIGUNAKAN UNTUK MEMBUAT JARINGAN WAN.
Alat membuat jaringan wan:
a.Obeng
b.Tang kriping
c.Lan tester
d.Kabel
e.Konektor
Komponen yang digunakan
a.PC merupakan berasal dari kata Computer,
yang berarti menghitung. Artinya, setiap proses yang dilaksanakan oleh komputer
merupakan proses matematika hitungan dan diolah sedemikian rupa dari
perhitungan secara elektronik
b.Switch berfungsi sebagai terminal
atau pembagi sinyal data
bagi kartu jaringan (Network Card).
c. Router merupakan perangkat keras yangdapat menghubungkan dua ataulebih jaringan
yang menggunakanIP Addres yang berbeda dengan katalain Routing
d. Lan Card berfugsi untuk
menghubungkan komputer dengan kabel yang digunakan pada jaringan.
Bahan yng digunakan untuk membuat jaringan wan:
a.Kabel berpungsi sebagai penghubung
antar klayen.
b.Konektor berpungsi sebagai
penyambuing kabel.
E.TOPOLOGI
YANG DIGUNAKAN
Topologi
cincin
adalah satu topologi rangkaian komputer di mana setiap nod
disambungkan dengan dua nod yang lain, membentuk satu laluan sejajar tunggal
untuk penghantaran isyarat terus ke setiap nod. Data
akan melalui dari setiap nod ke setiap nod seterusnya, setiap laluan nod yang
dilalui akan menerima setiap paket data. Oleh
kerana topologi cincin menyediakan hanya satu laluan di antara dua nod,
topologi ini mungkin akan terganggu jika berlaku kegagalan di antara satu
pautan. Satu nod gagal berfungsi atau kerosakan kabel
berlaku menyebabkan semua nod akan terasing dari topologi cincin. Rangkaian
FDDI dapat mengatasi kelemahan dengan penghantaran data mengikut arah jam dan
arah lawan jam membentuk cincin: jika berlaku kegagalan data
akan dihantar balik untuk melengkapkan cincin sebelum ia sampai dihujung kabel,
ia bertindak menyelenggarakan sepanjang setiap nod seperti "cincin C". Protokol
rangkaian 802.5 -- juga dikenali sebagai rangkaian gelang
token IBM -- juga mengelak kelemahan tersebut:
mereka menggunakan topologi
bintang pada lapisan
fizikal dan unit akses
pelbagai stesen untuk meniru cincin pada lapisan pautan data.
F.CONPIGURASI JARINGAN
WAN
Sebelum kita membuat jaringan seperti di atas kita tentukan dulu IP
address yang di gunakan , saya menggunakan IP kelas C pada LAN 1 dan LAN 2, sedangkan router menggunakan Ip Public.
JARINGAN LAN
NAMA
KOMPONEN
IP
ADDRESS
NETMASK
GATEWAY
PC 0
192.168.2.2
255.255.255.0
192.168.2.1
PC1
192.168.1.2
255.255.255.0
192.168.1.1
ROUTER
NAMA
KOMPONEN
IP
ADDRESS
NETMASK
Serial0/0
Fastethernet
0/0
Serial0/0
Fastethernet
0/0
Router
0
10.10.10.2
192.168.2.1
255.0.0.0
255.255.255.0
Router
1
10.10.10.1
192.168.1.1
255.0.0.0
255.255.255.0
Langkah-langkah
membuat jaringan wan
1.Buka paket traicer,lalu ambil router
2
.Kemudian
ambil pc dan router
3.Setelah
itu berikan catatan ke setiap komponen, supaya lebih mudah mekonfigurasi:
4.lalu
konfigurasi komponen komponennya yang pertama router 0
a.kemudian Konfigurasi
pada serial 0/0 dengan IP Address 10.10.10.2 dan Subnet mask 255.0.0.0 serta port statusnya di centang.
b.Kemudian konfigurasi
pada fastethernet0/0 dengan IP adderess 192.168.2.1 dan Subnet mask
255.255.255.0 serta port status di centang.
5.lalu konfigurasi pada router 1 :
a.lalu Konfigurasi pada
serial 0/0 dengan IP Address 10.10.10.1 dan Subnet mask 255.0.0.0 serta port statusnya di centang.
b.lalu konfigurasi pada
fastethernet0/0 dengan IP adderess 192.168.1.1 dan Subnet mask 255.255.255.0
serta port status di centang.
6.Kemudian
konfigurasi pada LAN 1 yaitu PC 0 dengan IP Adderess 192.168.2.2, Subnet Mask
255.255.255.0, dan gateway 192.168.2.1.
7.lalu
konfigurasi pada LAN 2 yaitu PC 1 dengan IP Adderess 192.168.1.2, Subnet Mask
255.255.255.0, dan gateway 192.168.1.1.
8.agar
Lan 1 bisa yambung/berkomunikasi dengan Lan 2 yang beda IP dan Network yang
berbeda, perlu konfigurasi di router 0 pada routing static :
Network : 192.168.1.0
Mask : 255.255.255.0
Next Hop : 10.10.10.1
Kemudian
klik Add.
9.Supaya
Lan 2 bisa terhubung/berkomunikasi dengan Lan 1 yang beda IP dan Network yang
berbeda, perlu konfigurasi di router 1 pada routing static :
Network : 192.168.2.0
Mask : 255.255.255.0
Next Hop : 10.10.10.2
10.Lalu
coba meng-ping dari Lan 1 (PC 0)=
192.168.2.2 ke Lan 2 (PC1)=192.168.1.2
Lalu
Begitupun sebaliknya........
Gambar pada PC 0
saat pada meng-ping
PC 1 saat pada meng-ping
11.Ini lah Instalasi dari jaringa wan yang kita buat sudah berhasil...... SELAMAT MENCOBA
Tolong Laporkan Jika Ada Link Yang Error Atau Gambar Tidak Muncul :) dan mohon untuk mengklik iklan banner untuk kelangsungan blog :)" Sekalian juga untuk biaya sekolah admin nya. :) terimakasih :) EmoticonEmoticon
Tolong Laporkan Jika Ada Link Yang Error Atau Gambar Tidak Muncul :)
dan mohon untuk mengklik iklan banner untuk kelangsungan blog :)"
Sekalian juga untuk biaya sekolah admin nya. :) terimakasih :)
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